Ejector for printing-machines



J. S. DUNCAN.

EJEGTOR FOR PRINTING MACHINES.

APPLICATION FILED JUNE 23. 1919.

Patented Sept. 28,1920.

2 SHEETS-r-SHEET l- I. S. DUNCAN.

EJECTOR FOR PRINTING MACHINES.

'APPLIQATION man mums, m9.

1 ,353,899, Patented Sept. 28, 1920.

. 2 SHEETS-SHEET 2. 32'

; UNITED" STATES PATENT OFFICE.

JOSEPH S. DUNCAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO AD DRESSOGRAP H COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

EJECTOR FOR PRINTING-MACHINES.

b all whom it mag concern:

Be it known that I, JosErH S. DUNCAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ejectors for Printing-Machines, of which the following is a specification.

The object of this invention is to provide an addressing machine with ejector mechanism of simple construction for automatically ejecting the work at the conclusion of the printing operation.

The invention is particularly adapted for hand operated addressing machines which are largely employed for addressing envelops, cards, tags and other work, and I have illustrated the invention embodied in such a machine in the accompanying'drawings, but I do not wish to be understood as limiting the scope of the invention to this particular application since it is apparent that it may be embodied in other types of printing machines for operation in the manner hereinafter set forth.

A further object of the invention is to provide a mechanism which can be bodily attached toand removed from the machine by means of a single screw without in any way affecting the normal operation of the machine.

In the drawings Figure 1 is a plan view showing my invention applied to a hand-operated addressing machine with the parts in printing position;

Fig. 2 is a-side elevation of the ejector .or throw-off attachment as shown in Fig. 1;

Fig. 3 is a rear elevation of the attachment as shown in Figs. 1 and 2 and showing a portion-of the addressing machine;

Fig. 4 is a sectional view on the line 4-4 of. Fig. 3'; I

Fig. 5 is a detail sectional view showing the normal position of the tripper and its associated parts;

Fig.6 is a detail view showing the normal position of the pawl 45 in its relation to the parts immediately associated therewith.

Referring to the drawings, the machine comprises a suitable base 4 having a work support 5, an ink ribbon 6, a magazine 7 in which the printing devices (not shown) Specification of Letters Patent. Pate t d S t 2 1920' Application filed June 23, 1919.

Serial No. 306,029.

are stored and from which they are fed by suitable means forwardly on the tracks 8 to printing position at the ribbon 6 and below the platen which is carried by the lmpression member 9 pivotally mounted at 10, 10, to the base and provided with an operating handle 11. The impression member is normally held in elevated position by a spring 10 connected with said member and to the base of the machine. In this type of machine the printing devices are fed forward from the magazine one at a time to printing position below the ink ribbon, the envelops or other work are fed by hand one at a time to printing position above the ink ribbon, the impression member is operated by hand to press the envelop upon the ink ribbon against the printing device to obtain the impression, the impression member is automatically returned by its spring or other suitable means to elevated position, the printing device which has been printed is fed forward from printing position, unless duplication is desired, and another printing device is fed into printing position, and the ribbon is automatically fed at each operation of the machine.

A fixed guide 12 extends across the base of the machine, as shown in Fig. 1, and is provided with arms 13 which are adjustably secured in a suitable manner in projections 14: on the base. This guide is arranged to be engaged by the upper edge of the work and it is adjusted to the size of the envelop or other work as may be required to register and guide the work for the printing operation.

The ejector comprises an ang ar member having a horizontal portion 15 lie beneath the envelop and an upright portion 16 to form a guide or registering device for one end of the envelop. This ejector is mounted on one end of a rod 1? which has a flattened upper surface 17 and is slidably sup-ported in an opening 3.8 in the frame 19 of the ejector mechanism and. also in an opening in the plate 20 which is riled by a rod 2t adjustably mounted in said ejector frame and secured in position by the set screw 22. A horizontally swinging lever 23 is pivotally mounted on the upright pin 24 secured in the frame of the ejector 1RQCl11- nism (Figs. 2, 8) and the forward end of this lever pivotally connected'at to one end of a link 26. T he other end of this l nk its actuating lever 2-5 are limiter in their return movement by a-stop 28 on the frame 19,

there being a cushion 29. on the face of the stop to relieve the parts of shocks and jars.

The pivot end of the lever 23. is provided with an angular projection 30, (Fig. 4) and a spring 31 fastened at one end to the end of this projection and at its other end to the frame 19 returns the ejectorand'its operating lever. to normal position against the cushion 29, as shown in Fig.1..

The, means for setting the ejector or throw-oil mechanism for. operation and for operating, the ejector lever 23 comprise a rocker pivoted at 3. to the ejector frame and having the oppositely disposed arms 33,

The arm has a downward projection 35 at its outer end which is'arranged in the path'of a tripper carried by the impression member. A square pin 3'? is also carried bythe arm 33 (Figs.

l, at) and is located-between-the pivot of the rocker and the projectioni35. IA latch vice in the form of a spring-pressed pawlBS is pivotally'mounted at 39 in an angular po sition on the ejector frame. 7 In normal position, with the impression member elevated, the tripper'will push the latch pawl against its spring and hold the free end away from pin 37, as shown in Fig. 5. hen t" pression member is depressed the tripp i. is carried away from the latch pawl and spring 40 presses the latch pawl against the pin 37 until thispin, being carried forward with the rockerarm. 33 by engagement of the tripper with projection on said rocker arm; ismoved beyond theend of the latch pawl, whereupon the latch pawl is swung by pressure of its spring to the position shown in Fig. In this position the fiat end of the latch pawl is opposed to the flat face of the pin 87 and when the impression member begins its return travel the rocker spring 4-2 will swing the rocker until pin 37 engages the end or the latch pawl which then holds the rocker 1n setposition tor operating theeje'ctor while the tripper travels with the impression member away from projection 35. There is a slight lost motion of the rocker'and its pin 37with relation to the latch pawl at the end of the impression stroke of the impression member, as shown ejector frame and atits other end to a pm ll on the rocker arm 3%. An operating pawl 45 (Figs. 1,4) is pivoted: at 46 between its ends'i-n ears el'Z-on the ejector lever 23. A spring r-8 interposedbetween the'pawl l?) and the. ejector lever 23 normally pushes the outer beveled end 45 or" said pawl outward adjacent the bar ll (Fig. When the rocker is swung to the position shown'in Fig. '1, by the downward impression movement or tl e impression member, the bar ll is ca-rried rearward beyond the operating pawl 45to clear the same (fig. 4), whereupon the spring &8 pushes the pawl -15 outward. until the. beveled end thereof is ar-' ranged in the path or" the bar onthe return 'movement of the latter.

move-menu. an adjusting screw 4-9bearing against lever 23 positions the pawl 45 for engagement with bar ll.

A lug 50 on the rocker is arranged to at gage a lug 51 on the ejector frame to'limit the return movement of the rocker 1)" and a fiat spring 52 is arranged onthe ejec-' tor frame to be engaged by the ejector lever to limit the forward movement thereof.

The entire ejecting-mechanism is mounted on the ejector frame- 19- and is detachably secured to the base of the machine by a single screw 53. 1

My invention will be readily understood from theforegoing description in connection with the drawings On each downward impression movement of the impression member the ejectingmechan-ism is set for operation and at the limit of the upwardreturn movement of the impression member the tripper 38. is released to permit the ejector mechanism to operate. .The ejector has a very quick movement, both forward and return, and it willeject the envelop or other work at one side of themachine so that another envelop .may be arranged in print ing position and the impression operation conducted rapidly. f i I An important feature of my invention is that the operation of the ejector is not in' any way affected by a variation in the speed or" operation of the impression member eitheron its impression movement or on its return movement. It will be noted that the ejector mechanism isset or cocked on the desired movement of the impression mem- 1,aus,eoe

her, when the tripper swing-s the maker to the position indicated in Fig. l which permits the latch pawl 38 to swing into said position in front of the pin 37. This takes place during every full downward movement of the impression member whether this movement be fast or slow. And the operation of the ejector occurs on the return movement of the impression member when the tripper releases the latch device 38 from engagement with the pin 37, whether this return movement be fast or slow. The importance of operating the ejector with uniformity whether. the impression member is operated fast or slow will be readily ap areciated because these machines may be operated by unskilled boys and girls who do not always regard uniformity of operation as essential to the work. But it is essential that the ejector should, at every operation, properly perform'its complete function of throwing out the envelop to a receptacle or to a position at one side of the machine and this must be done with uniformity regardless of the speed of operation of the impression member. My invention performs its function in a manner which will be apparent from the foregoing description and drawings and as above stated the throwing out operation takes place quickly and uniformly near the completion of the stock of the impression member.

I am aware that some changes in the form, proportion and arrangement of parts will proba ly have to be made to adapt the invention to other machines of different kinds and sizes, and that other such changes may be required or desirable for various reasons and I would therefore have it understood that I reserve the right to make all such changes as fairly fall within the scope of the accompanying claims.

I claim:

1. In a printing machine, the combination of an ejector, a lever to operate said ejector, a spring controlled rocker, means interposed between the rocker and said lever for of an ejector, a lever to operate said ejector,

a spring controlled rocker pivotally mounted independent of said lever and movable conjolntly therewith and independently thereof, means for holding the rocker in set position for operating the lever, and a tripper for operating said means.

In a printing machine, the combination of an ejector, a lever to operate said ejector, a spring controlled. rocker, means for communicating movement of the rocker in one direction to the lever, means for holding the rocker in set position, a tripper for moving said rocker to set position and for releasing the holding means.

4. In a printing machine, the combina tion of an ejector, a lever to operate said ejector, a spring controlled rocker, means for communicating movement of the rocker in one direction to the lever, a latch pawl for holding the rocker in set position, and a tripper engaging said rocker onits movement in one direction to move the rocker to set position and engaging the holding means on its movement in the return direction for releasing said means.

5. ,In a printing machine, the combination of an ejector, a lever to operate said ejector, a spring controlled rocker, yielding means carried by the lever and adapted to be arranged in the .path of travel of the rocker in one direction for operating said lever, means for holding the rocker in set position, and a tripper for moving the rocker to set position and for releasing the holding means.

6. In a printing machine, the combination of an ejector, a lever to operate said ejector, a rocker, a spring for moving the rocker in one direction to operate the ejector lever, yielding means for holding the rocker in set position for operation, and a tri aper carried by a spring actuated impression member and adapted to engage said rocker to set the same and to release said holding means.

7. In a printing machine, the combination of anejector, a lever to operate said ejector, a spring'controlled rocker pivotally mounted independent of said lever, means for communicating movement of the rocker in one direction to the lever, a tripper carried by a spring actuated impression member and adapted to move the rocker to set position, and means for holding the rocker temporarily in set position and adapted to be operated by the tripper to release the rocker.

8. In a printing machine, the combination of an ejector, a lever to operate said ejector, a spring controlled rocker comprising two oppositely disposed arms, means cooperating with one of said arms for communicating movement of the rocker in one direction to the lever, means cooperating with the other arm for holding the rocker in set position, and a tripper cooperating with said other arm to move the rocker to set position and adapted to engage said holding means to release the same.

9. In a printing machine, the combination of an ejector, a lever to operate said ejector, a spring controlled rocker, means for communicating movement of the rocker in one direction to the lever, a pin on the rocker, a tripper arranged to'engage said pin to hold the rocker in set position, and a tripper for moving the rocker to set position and for releasing said holding means.

10. In a printing machine, the combina- 11; In a printing machine, thehonibination or an ejector, a lever to operatesaid ejector, a s'pringrcontrolled rocker,.means for communicating movement oftherocker in one. direction to the lever, 'a pin on the rocker, a yielding latch device adapted to be arranged in the path of said pin to hold the rocker in set position, and'a trippercarried by an impression member and engagingsaid Y rocker in its movement inone direction to set the rocker in operation and engaging said latch device on its movement in the re .verse direction to release said device. I

'12. In a printing'machine,the combina tionqof an ejector, a lever to operate said ejector, a spring controlled rocker, means for communicating movement of the'rooker in one direction to the lever, a pin on the roclrer, a latch device arrangedvto engage said pin to hold the rocker in set position, and a tripper carried by an. impression member and engaging the rocker on its impression movement-to move the rocker to set position and engaging the holding'means to release said means near the end of its return movement from the impression operation to] enable said rocker to" operate. the ejector. w f

13. In a' printing machineflthe combination of an-ejector, a lever to operate said ejector, a spring controlled rocker compris ing two oppositely disposed arms, means co+ operating with one of said arms to communicate movement of the rocker in one direction to the lever, a pin and a projection on the other arm, yielding means for engaging said pin to hold the rocker in set position,

e1 reset and a tripper carried by an impression mom'- ber to engage said projection and move the o tion-of an ejector, a lever to operate said 7 ejector, a rocker, a spring for swinging said rocker in one dlrection, a pawl ada'ptedto be arranged in the path of said ,rocker to communicate movementof the 'rockerito the impression member. and adapted to 1 move said rocker to set position and to release said holding means.

15,. In a printing machine, thecombination of an e ector, a lever to operate said ejector, a spring. controlled rocker having two oppositelydisposed arms, a bar on one arm, a yielding pawl carried by the lever and adapted to be arranged in the path of 'said bar to communicate movement of the rocker tothe lever, means for holding-the rocker in set position, and a tripper adapted to move the rocker to set position and to release said holding means. 4 v V 16. In a printing machine, the combination of an ejector, a lever to operate said ejector, a spring to return said lever to normal position, a two arm rocker mounted independently of said lever, a bar on one of said arms, a device on the lever adapted to be arranged in the path of said bar to communicate movement of the rocker in one directioh to the lever and to clear the bar on the return movement'oi the lever, a spring for swinging said'rocker in one direction, means for holding the rocker in set position, and a tripper for moving the rocker to set position and for releasing said holding means.

Josnrn s. DUNCAN.

Witness: KMQA. KInDIE. 

